where \(h_{ij}\)  and \(\pi ^{ij}\)  behave as in [1]}, namely,
\(h_{ij} & = & \frac{\overline{h}_{ij}(\theta , \varphi )}{r}+\mathcal {O}(r^{-2})\,,\\\pi ^{ij} & = & \frac{\overline{\pi }^{ij}(\theta , \varphi )}{r^{2}}+\mathcal {O}(r^{-3})\,,\) 
